1 tablespoon olive or vegetable oil
1 large (10-ounce) ripe tomato, cored, seeded (if you wish) and cut into 1/4-inch pieces
1 medium onion, cut into 1/4-inch pieces
Hot green chiles to taste (roughly 1 large jalapeno or 2 large serranos), stemmed, seeded (if you wish) and finely chopped
3 tablespoons tequila, preferably a silver (blanco) tequila
8 ounces Chihuahua or other Mexican melting cheese, such as quesadilla or asadero, shredded (you’ll have about 2 cups)
1/2 cup chopped cilantro

Heat the oil in a very large (12-inch) skillet over medium-high. Add the tomato, onion and chiles, and cook, stirring nearly constantly, until the onion begins to soften and brown, about 7 minutes. Add the tequila and cook quickly, stirring, until nearly reduced to a glaze. (If you tip the pan toward an open gas flame, it will ignite. If you choose this route, simply shake the pan back and forth until the flames subside and the tequila has reduced to a glaze.) Reduce the heat to medium-low, sprinkle the cheese evenly over the vegetables and stir slowly and constantly until just meltedtoo long over the heat and the cheese will become tough, oily and stringy. Scoop into a warm dish, sprinkle with the cilantro and serve right away with tortillas for making soft tacos. You may want a little salsa, too.